Answer:

vowels

Answer	Crossword Clue
VOWELS	E,I,E,I,O
VOWELS	"Wheel Of Fortune" buys
VOWELS	Tsk-tsk dearth?

VOWELS	Alphabet quintet
VOWELS	A and E, e.g.
VOWELS	"Wheel of Fortune" purchases
VOWELS	"Sequoia" includes them all
VOWELS	Six letters.
VOWELS	Most of Kauai
VOWELS	Aioli, mostly
VOWELS	Hungarian has 13

VOWELS	A-e-i-o-u
VOWELS	E-I-E-I-O
VOWELS	Complete set in musical comedy?